Here's my GSG for sale. It has Sovtek 6A3 tubes instead of the 6B4G's, same tube except these have a UX4 base. Otherwise it's a stock GSG build. Transformers are Triode PA-774 and James 6113-HS. There is no bottom plate. The only flaw with this amp is the power transformer is slightly off-center, not very noticeable.
This amp sounds really good and has low hours.
$300.00 shipping included! Lower 48 only.